Electric-connection rosette.



PATENTED AUG. 2, 1904.

M. NORDEN. ELECTRIC CONNECTION RCSETTE.

APPLICATION FILED SEPT. 19, 1903. N0 MODEL.

Patented August 2, 1904.

PATENT QFFICE.

MORTIMER NORDEN, OF NElV YORK, N. Y., ASSIGNOR, BY MESNE ASSIGN- MENTS,TO MARY BITTNER, OF NEW YORK, N. Y.

ELECTRIC-CONNECTION ROSETTE.

SPECIFICATION forming part of Letters Patent No. 766,767, dated August2, 1904. Application filed September 19, 1903. Serial No. 173,796. (Nomodel.)

To (bZ-l (Uh 077D it may concern/.-

Be it known that I, MORTIMER Non nmacitizen of the United States,residing in the borough of Manhattan, city, county, and State of NewYork, have invented an Improvement in Electric-Connection Rosettes, ofwhich the following is a specification.

Lily invention relates particularly to the class of electric-connectionrosettes that are employed in surface wiring; and the object of myinvention is to produce a rosette in which electrical contact may bemade with line-wires at the part connected to a foundation or supportand in which said contact with the linewires may not be disturbed bytaking away the removable parts, but also in which the connectionthrough the leads from the rosette to the device utilizing the power maybe made when the movable parts are connected tothe support or may bebroken to open the circuit when the parts are disconnected from suchsupport without the risk of contact with live conductors or theshort-circuiting of the same.

According to my present invention the rosette is preferably of elongatedrectangular shape and comprises a head and a base, both of which may bemade of porcelain or other similar suitable material. The head ispreferably provided centrally with an integral hol- 3 low semisphericalportion extending appreciably on either side longitudinally of the head,and the base corresponds in outline with the head. The head is providedexteriorly of its hollow semispherical portion with openings placed indiametrically opposite positions and through which screws are passedcontacting both with plates through which the circuit is made with theleads and with other plates in the base which are electrically connectedwith line-wires. These screws complete the electric circuit to andthrough the leads from the rosette and also mechanically connect thehead and the base to hold the same together.

In the drawings, Figure 1 is a central longitudinal section of anelectric-connection rosette representing my invention. Fig. 2 is a planof the same. Fig. 3 is an inverted plan of the head. Fig. l: is a planof the base, and Fig. 5 is an elevation and partial section showing amodification of the structure shown in Fig. 1.

(1 represents the head of the electric-connection rosette, which ispreferably of elongated rectangular form and made of porcelain or othersimilar vitrified material. The head is provided with a central integralhollow semispherical portion a, which extends to an appreciable distancebeyond two opposite surfaces of the head. Centrally and at diametricallyopposite points outside of the semi- 6o spherical portion the head isprovided with two sets of openings 2 and 3, and on the under side of thehead 1/. I employ metal plates 6, which conform to the rear surface andare secured to the head a by means of screws 4 passing through theopenings 3. Centrally and longitudinally the inner portion of the head(L is recessed, and the metal plates 5 are made to conform to the basesof these recesses, whereby they extend an appreciable distance withinthe interior of the hollow semispherical portion a. The plates Z) arealso provided with screws or binding-posts 5, to which the leads 6 maybe electrically connected, and the semispherical portion a is providedcentrally with an opening 7, through which the leads 6 are passed.

0 represents the base, which is preferably made of the same material asthe head and conforms to the same in outline. The base is provided withlongitudinally-disposed central recesses (Z and d, and metalcontact-plates e are secured in the recesses (Z at either end of thebase by means of screws 8, and the plates e are provided withbinding-posts 9, by which electrical contact is made between the plates0 and the line-wires 10, the base 0 being provided with transverserecesses 11, through which the line-wires 10 are admitted. Screws 12 areemployed and passed through the openings .2 in the head a, through themetal plates Z) and into the contact-plate e, completing the electricalconnection from the line wires through the contact-plates 0, plates 6,the leads 6, and the device or devices to which the same supply power.The ends of the base 0 are provided with ribs 14: and correspondingedges of the head a with offset recesses 15.

These parts are adapted to fit into one another when the head and baseare in position, in which relation the screws 12 also hold the partstogether, and portions of the plates 7) fit within the ends of therecess (Z.

According to the modification shown in Fig. 5, I may provide theintegral hollow semispherical portion of the head with a sleeve 16 and anut 17, to which a metal fixture or other device may be secured. Thebase may be provided with openings 18, through which screws or othersimilar devices may be passed to secure the same to its support.

I claim as my invention 1. An electric-connection rosette comprising ahead of elongated rectangular form made of porcelain or other suitablevitrified material, a base of similar form and material and havinglongitudinallydisposed central recesses, metal plates secured in saidrecesses in the base and with which the line-wires make contact, metalplates on the inner side of the head, screws passing through the saidhead and securing the metal plates on the inner side thereof thereto-andscrews passing through apertures in the head at diametrically oppositepoints, passing through the metal plates and engaging the plates in therecesses of the base to connect the parts and complete the electriccircuit.

2. An electric-connection rosette compris ing a head of porcelain orother suitable vitrified material and having an integral. semisphericalhollow portion with an opening in the said portion and openings in thehead outside and at opposite sides of said portion, metallic devices onthe inner side of said head,

screws passing through said head to secure the said metallic devicesthereto, means for connecting lead-Wires to said metallic devices, abase of the same material and configuration as the head, other metallicdevices secured in recesses at either end of said base, bindingposts bywhich the line-wires may be secured to the said other metallic devicesand means passing through the openings in the head for simultaneouslyholding the parts together and contacting electrically with both sets ofsaid metallic devices to complete the electrical circuit through therosette.

3. An electric-connection rosette comprising a head of porcelain orother suitable vitrified material and having an integral centralsemispherical hollow portion with an opening in the said portion andopenings in the head outside of said portion, metal plates on the innerside of said head, screws passing through said head to secure the saidmetal plates thereto, binding-posts for connecting lead-Wires to saidmetal plates, a base of the same material and configuration as the head,other metal plates secured in recesses at either end of said base,binding-posts by which the line-Wires may be secured to the said othermetal plates and screws passing through the openings in the head forsimultaneously holding the parts together and contacting electricallyWith both sets of said metal plates to complete the electrical circuitthrough the rosette.

Signed by me this 5th day of March, 1903.

MORTIMER N ORDEN WVitnesses:

GEO. T. PINCKNEY, BERTHA M. ALLEN.

